Our Service Lines

Photogrammetry Services
(1)Aerial Triangulation

Aerial triangulation is the process of establishing a mathematical relationship between the images contained in a project, the concerned camera or sensor, and the ground coordinate system. The process of AT represents the mathematical process of determining precise and accurate relationships between the individual image coordinate system and a defined datum and projection (ground). The information resulting from triangulation process is required as an input for further processes of Digital Terrain Modeling, Vector Compilation & Orthophoto rectification of images.

(2)Stereo Compilation / 3D Map production

Stereo (Photogrammetry) compilation refers to locating data, on aerial photographs and/or stereo satellite images in their proper horizontal & vertical positions according to the map projection system, datum and the scale being used.

(3)Digital Elevation Model

A Digital Elevation Model (DEM) contains mass points (X, Y) which are positioned in a regularly spaced grid (for example 10m x 10m or 20m x 20m). The elevation values (Z) in a DEM represents the height of the terrain, relative to a specific vertical datum. The DEM does not contain any manmade structures such as buildings, bridges, walls etc. The DEM is kind of a raster data structure and therefore is similar to a digital image

(4)Digital Surface Model

A Digital Surface Model (DSM) is similar to a DEM containing mass points (X, Y) which are positioned in a regularly spaced grid (for example 10m x 10m or 20m x 20m). The elevation values (Z) in a DEM represents the height of the terrain, relative to a specific vertical datum. A DSM contains all features (manmade as well as natural) and it covers all buildings, vegetation, bridges etc. In other words, a DSM incorporates everything as visible from the aerial view, ground as well as elevated features.

(5)Digital Terrain Model

A digital terrain model (DTM) also consists of mass points (X, Y) with elevation values (Z) but unlike the DEM, the mass points are not in the form of a regularly spaced grid. The mass points are placed randomly as per the undulation of the terrain and the density of points can be adjusted so as to represent the actual terrain. In other words, lesser mass points can be used in a flat area more mass points can be captured to describe undulating terrain. Breaklines (to depict sudden change in the terrain) are also an integral feature in a DTM, besides the mass points.

(6)Digital Orthophoto

An Orthophoto can be defined as an aerial photograph which is free from relief distortions, anomalies arising from camera lens & aircraft’s flying attitude (Roll, Pitch & Yaw OR Omega Phi Kappa). An Orthophoto combines the image characteristics of an aerial photograph with the geometric qualities of a map showing all ground features in their correct ground positions facilitating direct measurement of distances, areas, angles, and the detailed portions of ground features that may be generalized on traditional maps. An Orthophoto fulfills a fundamental role as a geometrically accurate base map.

(7)3D City Modeling

A 3D city model can be defined as a three-dimensional depiction of a city. A 3D city model consists of a digital elevation model (DEM) and 3D building data (building polygons). The building polygons are extruded on the basis of their elevation versus that of the ground (DEM). A 3D city model is used in a variety of fields including but not limited to urban planning, telecommunications, infrastructure development & tourism etc.


LiDAR (Light Detection And Ranging) is a method of generating precise and directly georeferenced spatial information about the shape and surface characteristics of the Earth. It has become an established method for collecting very dense and accurate elevation data across landscapes, shallow-water areas, and project sites. LiDAR is typically “flown” or collected from planes where it can rapidly collect points over large areas. LiDAR can also be collected from ground-based stationary and mobile platforms. These collection techniques are popular within the surveying and engineering communities because they are capable of producing extremely high accuracies and point densities, thus permitting the development of precise, realistic, three-dimensional representations of railroads, roadways, bridges, buildings, breakwaters, and other shoreline structures.

GIS Data Conversion
(1)Automated Mapping & Facility Management (AM/FM)

Automated Mapping/Facilities Management (AM/FM) is a subset of GIS, which is associated with public utilities like gas, electric, water and telecommunications. The term AM/FM mostly refers to GIS software that allows utility users to digitize, manage and analyze their utility network data. This data is stored in an underlying GIS database which also maintains the associations between the graphical entities and the attributes.

(2)Golf Course Mapping

The golf course mapping consists of mapping the Golf Courses to view the sites from 2 and 3-dimensional perspectives. The visual representation allows for better communication between course personnel, vendors, insurers and governments agencies establishing accurate area and linear measurements. Golf Course Mapping is also used to create a virtual experience of the golf course. The graphics highlight the course layout and provide fly-by movies of each hole giving the consumer a true-to-life experience demonstrating the beauty and challenge of the course.

(3)Parcel Tax Mapping

Parcel Mapping is the process in which land parcels comprising of polygons are created from the base map showing the details of the ownership of the properties and related information. The base maps are the cadastral maps showing each individual plots in different sub divisions. The land parcels are the fundamental data layer on which different data are referenced.Parcel mapping has a variety of uses starting from Land administration, Property registration& Tax evaluation by Urban and Rural governing bodies. Parcel mapping is also used, for example, during rescue operations during floods and natural disasters for identifying property owners and retrieving crucial data. These maps are also the base for any such GIS Maps. The basic advantage of the process of parcel mapping is that we replace the cumbersome process of maintaining data on paper maps with digital maps resulting on better decision making, data sharing and operational costs and time.

(4)Raster to Vector conversion activities

Raster to Vector can be defined as a service to convert raster files into high quality fully scalable vectors for further use. In other words, it is a method to convert images into vector formats which enables them to be efficiently stored in a secure form not vulnerable to seasonal / weather related damage.